Telephone apparatus.



PATENTED DEC. 4, 1906.

G. BABCOGK. TELEPHONE APPARATUS.

APPLIGATION FILED AUG. 31. 1905.

zzwzzziifl Q24, Zi my UNITED STATES PATENT, OFFICE.

GARRISON BABCOCK, OF ROCHESTER, YORK, ASSIGNOR TO THE SIM- PLEX TELEPHONE EQUIPMENT COMPANY, OF ROCHESTER, NEW YORK,-

A CORPORATION OF NEW YORK.

TELEPHONE APPARATUS- To a. whom it may concern:

Be it knownthat I, GARRISON BABoooK, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Tele hone Apparatus; and I do hereby declare t e following to be a full, clear, and'e'xact escri tion of the same, reference being had to t e accompanying drawings, forming a part of the specification, and to the reference characters marked thereon.

My present invention relates to telephones, and has for its object to provide an instrument which is simple and compact in construction and may be conveniently carried either in a persons hand or in an ordinary pocket of a garment, adapting it particularly for the use of persons having impaired hear mg.

To these and other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification. l

In the drawings, Figure l is a view illustrating a complete apparatus embodyin my invention. Fig. 2 is a side elevation o the receiver and transmitter, showing the latter in the supporting-frame. Fig. 3 is an enlarged detail view showing the receiver with the cover removed. Fig. 4 is a cross-sectional view on the line 4 4 of Fig. 3. Fig. 5 is a similar view of a transmitter, Fig. 6 is a detail view of the battery. Fig. 7 is a diagrammatic view illustrating the circuit.

Similar reference characters in the several figures indicate similar parts.

A telephone set or apparatus constructed in accordance with my invention embodies generally a receiver 1, mounted in a support- -mg-frame 2, provided with spring-arms 3,

forming a handle by means of which the user may hold the receiver against his ear, and which are also adapted to receive and support the transmitter 4 in juxtaposition to t receiver when it is not in use. Both the receiver and the transmitter are connected by flexible cords U and 6, respectively, containing the circuitconductors leadin to a' small dry battery 7, as will be further escribed.

Thereceiver comprises a shell or casing 8, containing the usual electromagnets 9 on a Specification of Letters Patent. Application filed August 31, 1905. Serial No. 276,496-

Patented Dec. 4, 1906.

core 10, arranged beneath the diaphragm 11, which is secured by a removable cover-piece 12. The latter has an outer concave surface, as shown in Fig. 4, and projecting outwardly from the center is a perforated extension 13, adapted to project into the orifice of the skull or the outer meatus of the ear of a person. In order to more thoroughly exclude and reduce the efiect of air vibrations exteriorly of the receiver, theear-piece 13 is surrounded by a flexible dish shaped disk 14, which is adapted to engage the outer ear and to be more or less flattened against the concave surface of the cap when in operative position. Arranged in one of the parts of the instru ment, preferably in the receiver, is a bridgepiece 15, of insulating material, carrying the contactsa, b, and c, the first two of which receive the terminal wires 'of the electromagnets 9, which are connected directly to one of, the circuit-wires, (indicated by A,) whichleads indirectly to one side of the battery B. The other contact 0 is provided with a laterallyextending spring-finger 20, adapted to en.- gage a laterally-extending end on the contact a when the talking-circuit is-closed and to connect said contact with the other side of the battery by means of the circuit-wire C. As it is desirable to cut out the battery when the telephone is not in use, I provide a movable member 21, located beneath the spring 20, projecting outwardly from the side of the shell 8 in position to be operated inwardly when the transmitter 4 'is inserted between the spring-fingers of the holder, as shown in lhe battery which I employ comprises a dry cell 22, having pole-pieces 23 and 24. This cell is removably secured in the metallic casing, (indicated by 7 in Fig. 1,) forming one contact engaging the pole-piece 23 and to which one of the circuit-wires is connected. The other circuit-wire is connected to the insulated contact-piece 24, engaging the polepiece 24 when the cell 22 is in place within the casing. A small incandescent lamp 25 is also arranged on the casing 7, having one of 100 its terminalsconnected to the contact 24 and the other joined to acontact-piece 23, which may be engaged by a spring-operated contact-button26, carried on the casing and adapted to be moved inwardly by the opera- 1 05 tor, which may be engaged withthe polepiece to close the lamp-circuit when it is decase 30, containing a diaphragm 31 and a Conductive material.

sired to make a battery test. 1

The transmitter 4 comprises a cylindrical bridge32, provided on their proximate faces with the front and back electrode-plates 33 and 34, respectively, between which is ,lo--

cated the usual powdered carbon or other The front of the transmitter is closed by a cover 35, having ahentral perforation'or a series of perforations 36, leading to the diaphragm'31, and arranged thereon is a collapsible trumpet or mouthpiece composed of a plurality of tapering telescoping .rings 37, which may be drawn outwardly, as shown in Fig. 2, and collapsed, as indicated, when the device is not in use, the inner rin being secured to the cover and'surroun' g the perforations 36. The circuit connecting the transmitter and receiver with the battery and the test-lamp is shown in Fig. 7, from which it will be seen that the conductor A extends directly to the diaphragm 31. One side of the battery B is connected by :the conductor C to the back electrode 34c, while a-continu-ation-of the said conductor 0 extends 00m the other side of the battery through the contact a, .sprlngfinger 20, .to the contact a, when the finger 1s released by removing the transmitter from the holder out of engagement with the but- The test-lamp 25 has one ton-plunger 21. ofits terminals 27 connected to'the conductor C, while its other terminal 28 leads to the contact 23*, with which engages the pushbutton '26, attached, as before described, to the conductor 0 by its connection wlth the casing 7, whichis in engagement with the.

The conductors A and 'C are contact 23.

' the flexible cords 5 and '6, and

woven mto when the device is in operation the battery is,

carried in the user spocket,-and the cords .be- 3 ing of convenient length he may hold the, receiver in engagement with one of his ears and 1 ss'n sse hand the transmitter to the person with whom he desires-to engage in conversation.

In a telephone apparatus constructed in accordance with my invention comprising a receiver and transmitter which are adapted to be detachably secured together and providing means on one part controlled by the other for breaking the battery-circuit when the instrument-it not in use a battery of relatively small size and one-that is light in' weight may be employed, as current is not generated excepting when used to furnishworking current for the apparatus. By roviding the battery in a removable case avmine from time to time if it is producing the means, such as the lamp 25, for testing, its strength the operator may readily deterproper amount of electromotlve force and I when exhausted he may remove the old cell and place a new one in the casing.

I claim as my invention- 1. In a telephone set, the combination with a' circuit and a receiver and transmitter arranged therein, a supporting-handle .on one of the parts comprising holding-arms adapted to detachably retain the other part in proximity thereto.

2. In a telephone set, the combination with a circuit and a receiver and transmitter arranged therein, of a switch controlling said circuit located in the receiver, arms projecting at one side of the transmitter comprising a handle by means of which it may be supported when in use, said arms bein also adapted to secure the transmitter to t e re- .ceiver, and a switch-operating member located between the arms adapted to be operated when the transmitter is inserted between them.

GARRISON BABC'OCK.

Witnesses:

D. C. Gonna, E. O. LEWIS. 

